Remove dependency on base/string_util.h, and rename some methods to better match WebKit style.
Remove dependency on base/string_util.h, and rename some methods to better
match WebKit style.

R=brettw

Review URL: http://codereview.chromium.org/15058

git-svn-id: http://src.chromium.org/svn/trunk/src@7316 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 490e3ae4e48f5f73ceb75a982f2366886eb67643
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser